Commissioning (CX) Engineer (HVAC / Cooling Systems)

Hyreus is recruiting an experienced Commissioning (CX) Engineer specialising in HVAC and Cooling Systems for a role based in Dublin, supporting data centre projects across Europe. This is an excellent opportunity for a technically strong commissioning professional with experience in mission-critical environments, particularly data centres, HVAC systems and large-scale cooling infrastructure.

The successful candidate will play a key role in ensuring HVAC and cooling systems are installed, tested, commissioned and operating in line with project specifications and performance requirements. The position will involve working closely with project teams, contractors, equipment suppliers and clients throughout the commissioning lifecycle, with regular travel to data centre sites across Europe.

Responsibilities

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Plan, coordinate and execute commissioning activities for HVAC and cooling systems within data centre and other mission-critical environments.

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Support commissioning activities throughout the project lifecycle, from installation verification and pre-commissioning through to functional testing, integrated systems testing and final handover.

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Commission and test HVAC and cooling equipment, including chillers, air handling units, pumps, heat exchangers, CRAH/CRAC units and associated control systems.

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Develop and review commissioning plans, method statements, test procedures, checklists and commissioning documentation.

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Verify installations against approved drawings, technical specifications, design requirements and project standards.

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Carry out functional performance testing to confirm systems operate safely, efficiently and in accordance with design intent.

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Identify, investigate and resolve commissioning issues, equipment faults and performance discrepancies.

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Coordinate commissioning activities with electrical, mechanical, controls and BMS teams to ensure systems operate correctly as part of the wider data centre infrastructure.

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Support integrated systems testing (IST), including the verification of system interactions, alarms, control sequences and operational responses.

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Monitor commissioning progress, maintain accurate test records and report outstanding issues, defects and remedial actions.

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Work closely with project managers, consultants, contractors, OEMs and client representatives to ensure commissioning milestones are achieved.

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Ensure all commissioning activities comply with relevant health and safety requirements, quality standards and site procedures.

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Support the preparation of final commissioning reports, operating documentation and handover packs.

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Travel to data centre projects across Europe as required to support site commissioning and project delivery.

The Ideal Candidate

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Proven experience as a Commissioning Engineer, CX Engineer, HVAC Commissioning Engineer or similar technical role.

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Strong background in HVAC, mechanical services or cooling systems, ideally within data centres or other mission-critical environments.

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Practical commissioning experience with HVAC and cooling equipment, such as chillers, CRAH/CRAC units, AHUs, pumps and associated systems.

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Understanding of commissioning methodologies, including pre-functional checks, functional performance testing and integrated systems testing.

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Ability to interpret mechanical drawings, P&IDs, technical specifications, control sequences and commissioning documentation.

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Experience identifying and resolving technical issues during installation, testing and commissioning.

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Knowledge of HVAC controls, BMS integration, alarms and system interfaces would be advantageous.

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Strong understanding of health and safety requirements and quality procedures within construction and commissioning environments.

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Excellent communication and coordination skills, with the ability to work effectively alongside multidisciplinary project teams.

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A methodical, detail-oriented approach to testing, documentation and technical problem-solving.

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Ability to work independently on site while coordinating effectively with contractors, suppliers and client teams.

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Willingness and flexibility to travel regularly to data centre projects across Europe.

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Relevant engineering qualifications in mechanical, building services, HVAC or a related discipline would be advantageous